Comparison of the predicted and achieved labiolingual inclinations of the maxillary central incisors in adult Class II division 2 malocclusions treated with clear aligners
2
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
Objective: This study aimed to compare the predicted and achieved labiolingual inclinations of the maxillary central incisors in adult Class II division 2 malocclusions treated with clear aligners using Power Ridges® and composite attachments. Methods: This retrospective study included 24 patients (mean age, 26.5 ± 3.3 years). The patients had Class II division 2 malocclusion and were treated with non-extraction with Invisalign® clear aligners with either Power Ridges® or composite attachments to enhance the predictability of required change in labiolingual inclination for the maxillary central incisors. Before treatment, treatment prediction and final digital models were exported as stereolithography files and superimposed using the eModel 9.0 “Compare” software. The predicted and achieved labiolingual incisor inclinations were compared. Results: The mean accuracies of the achieved inclination of the central incisors were 68.3% in the Power Ridges® group and 71.6% in the attachments group. No statistically significant differences in predictability were found between the groups (P > 0.05). A low positive correlation was observed between the predicted inclination change and the average absolute difference between the predicted and achieved inclinations (r = 0.19). Conclusions: Predicted labiolingual inclination is not fully achieved with clear aligners in both the Power Ridges® and attachment groups. Clinicians must take measures to counteract this limitation, specifically in Class II division 2 cases.
Abstract
Objective: This study aimed to compare the predicted and achieved labiolingual inclinations of the maxillary central incisors in adult Class II division 2 malocclusions treated with clear aligners using Power Ridges® and composite attachments. Methods: This retrospective study included 24 patients (mean age, 26.5 ± 3.3 years). The patients had Class II division 2 malocclusion and were treated with non-extraction with Invisalign® clear aligners with either Power Ridges® or composite attachments to enhance the predictability of required change in labiolingual inclination for the maxillary central incisors. Before treatment, treatment prediction and final digital models were exported as stereolithography files and superimposed using the eModel 9.0 “Compare” software. The predicted and achieved labiolingual incisor inclinations were compared. Results: The mean accuracies of the achieved inclination of the central incisors were 68.3% in the Power Ridges® group and 71.6% in the attachments group. No statistically significant differences in predictability were found between the groups (P > 0.05). A low positive correlation was observed between the predicted inclination change and the average absolute difference between the predicted and achieved inclinations (r = 0.19). Conclusions: Predicted labiolingual inclination is not fully achieved with clear aligners in both the Power Ridges® and attachment groups. Clinicians must take measures to counteract this limitation, specifically in Class II division 2 cases.
참고문헌 (28)
- Nanda RS, "Biomechanics in orthodontics: principles and practice", pp.99~ (2010), Quintessence Pub Co
- Andrews LF, "The six keys to normal occlusion", Am J Orthod, 62, pp.296~309 (1972)[DOI]
- Archambault A, "Torque expression in stainless steel orthodontic brackets. A systematic review", Angle Orthod, 80, pp.201~210 (2010)[DOI]
- Wagner JA, "Stiffness of incisor segments of edgewise arches in torsion and bending", Angle Orthod, 55, pp.37~50 (1985)[DOI]
- Rauch ED, "Torque and its application to orthodontics", Am J Orthod, 45, pp.817~830 (1959)[DOI]
- Rossini G, "Efficacy of clear aligners in controlling orthodontic tooth movement : a systematic review", Angle Orthod, 85, pp.881~889 (2015)[DOI]
- Huang AT, "Controversies in clear aligner therapy", pp.125~134 (2022), Springer
- Nucera R, "Effects of composite attachments on orthodontic clear aligners therapy : a systematic review", Materials(Basel), 15, pp.533~ (2022)[DOI]
- Simon M, "Treatment outcome and efficacy of an aligner technique-regarding incisor torque, premolar derotation and molar distalization", BMC Oral Health, 14, pp.68~ (2014)[DOI]
- Grünheid T, "Effect of clear aligner therapy on the buccolingual inclination of mandibular canines and the intercanine distance", Angle Orthod, 86, pp.10~16 (2016)[DOI]
- Pavoni C, "Self-ligating versus Invisalign: analysis of dento-alveolar effects", Ann Stomatol(Roma), 2, pp.23~27 (2011)
- Kravitz ND, "How well does Invisalign work? A prospective clinical study evaluating the efficacy of tooth movement with Invisalign", Am J Orthod Dentofacial Orthop, 135, pp.27~35 (2009)[DOI]
- Haouili N, "Has Invisalign improved? A prospective follow-up study on the efficacy of tooth movement with Invisalign", Am J Orthod Dentofacial Orthop, 158, pp.420~425 (2020)[DOI]
- Robertson L, "Effectiveness of clear aligner therapy for orthodontic treatment : a systematic review", Orthod Craniofac Res, 23, pp.133~142 (2020)[DOI]
- Jiang T, "A cone-beam computed tomographic study evaluating the efficacy of incisor movement with clear aligners : assessment of incisor pure tipping, controlled tipping, translation, and torque", Am J Orthod Dentofacial Orthop, 159, pp.635~643 (2021)[DOI]
- Hahn W, "Torquing an upper central incisor with aligners-acting forces and biomechanical principles", Eur J Orthod, 32, pp.607~613 (2010)[DOI]
- Gaddam R, "Reliability of torque expression by the Invisalign® appliance : a retrospective study", Aust Orthod J, 37, pp.3~13 (2021)[DOI]
- Karras T, "Efficacy of Invisalign attachments : a retrospective study", Am J Orthod Dentofacial Orthop, 160, pp.250~258 (2021)[DOI]
- Mehta S, "Staging orthodontic aligners for complex orthodontic tooth movement", Turk J Orthod, 34, pp.202~206 (2021)[DOI]
- Adel SM, "Tip, torque & rotations : how accurately do digital superimposition software packages quantify tooth movement?", Prog Orthod, 23, pp.8~ (2022)[DOI]
- Dahlberg G, "Statistical methods for medical and biological students", Br Med J, 2, pp.358~359 (1940)
- Lin LI, "A concordance correlation coefficient to evaluate reproducibility", Biometrics, 45, pp.255~268 (1989)
- Danz JC, "Stability and relapse after orthodontic treatment of deep bite cases-a long-term follow-up study", Eur J Orthod, 36, pp.522~530 (2014)[DOI]
- Sandhya V, "Biomechanical effects of torquing on upper central incisor with thermoplastic aligner : a comparative three-dimensional finite element study with and without auxillaries", J Indian Orthod Soc, 56, pp.49~56 (2022)[DOI]
- Castroflorio T, "Upper-incisor root control with Invisalign appliances", J Clin Orthod, 47, pp.346~351 (2013)
- Upadhyay M, "Biomechanics of clear aligners : hidden truths & first principles", J World Fed Orthod, 11, pp.12~21 (2022)[DOI]
- Simon M, "Forces and moments generated by removable thermoplastic aligners : incisor torque, premolar derotation, and molar distalization", Am J Orthod Dentofacial Orthop, 145, pp.728~736 (2014)[DOI]
- Cheng Y, "Torque movement of the upper anterior teeth using a clear aligner in cases of extraction : a finite element study", Prog Orthod, 23, pp.26~ (2022)[DOI]